/*
 * Copyright (C) 2010 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 * These authors would like to acknowledge the Spanish Ministry of Industry,
 * Tourism and Trade, for the support in the project TSI020301-2008-2
 * "PIRAmIDE: Personalizable Interactions with Resources on AmI-enabled
 * Mobile Dynamic Environments", led by Treelogic
 * ( http://www.treelogic.com/ ):
 *
 *   http://www.piramidepse.com/
 */

package com.google.zxing.oned.rss.expanded.decoders;

import com.google.zxing.FormatException;
import com.google.zxing.NotFoundException;
import com.google.zxing.common.BitArray;

/**
 * @author Pablo Orduña, University of Deusto (pablo.orduna@deusto.es)
 * @author Eduardo Castillejo, University of Deusto (eduardo.castillejo@deusto.es)
 */
public abstract class AbstractExpandedDecoder {

    private final BitArray information;
    private final GeneralAppIdDecoder generalDecoder;

    AbstractExpandedDecoder(BitArray information) {
        this.information = information;
        this.generalDecoder = new GeneralAppIdDecoder(information);
    }

    protected final BitArray getInformation() {
        return information;
    }

    protected final GeneralAppIdDecoder getGeneralDecoder() {
        return generalDecoder;
    }

    public abstract String parseInformation() throws NotFoundException, FormatException;

    public static AbstractExpandedDecoder createDecoder(BitArray information) {
        if (information.get(1)) {
            return new AI01AndOtherAIs(information);
        }
        if (!information.get(2)) {
            return new AnyAIDecoder(information);
        }

        int fourBitEncodationMethod = GeneralAppIdDecoder.extractNumericValueFromBitArray(information, 1, 4);

        switch (fourBitEncodationMethod) {
            case 4:
                return new AI013103decoder(information);
            case 5:
                return new AI01320xDecoder(information);
        }

        int fiveBitEncodationMethod = GeneralAppIdDecoder.extractNumericValueFromBitArray(information, 1, 5);
        switch (fiveBitEncodationMethod) {
            case 12:
                return new AI01392xDecoder(information);
            case 13:
                return new AI01393xDecoder(information);
        }

        int sevenBitEncodationMethod = GeneralAppIdDecoder.extractNumericValueFromBitArray(information, 1, 7);
        switch (sevenBitEncodationMethod) {
            case 56:
                return new AI013x0x1xDecoder(information, "310", "11");
            case 57:
                return new AI013x0x1xDecoder(information, "320", "11");
            case 58:
                return new AI013x0x1xDecoder(information, "310", "13");
            case 59:
                return new AI013x0x1xDecoder(information, "320", "13");
            case 60:
                return new AI013x0x1xDecoder(information, "310", "15");
            case 61:
                return new AI013x0x1xDecoder(information, "320", "15");
            case 62:
                return new AI013x0x1xDecoder(information, "310", "17");
            case 63:
                return new AI013x0x1xDecoder(information, "320", "17");
        }

        throw new IllegalStateException("unknown decoder: " + information);
    }

}
